Optimizing LPDDR4 Performance And Power With Multi-Channel Architectures

PDDR4 offers huge bandwidth in a physically small PCB area and volume; up to 25.6 GByte/s of bandwidth at a 3,200 Mbps data rate from a single 15mmx15mm LPDDR4 package when two dies are packaged together. LPDDR4 builds on the success of LPDDR2 and LPDDR3 by adding new features and introducing a major architectural change. This white paper explains how LPDDR4 is different from all previous JEDEC DRAM specifications. It discusses:

Why designers are selecting LPDDR4

Highlights of the LPDDR4 architecture

How to best configure LPDDR4 channels

How to handle 2-die and 4-die packages with multi-channel connections

The advantages of sharing channels through system-on-chip (SoC) partitioning